What is the remediation approach for flex duct with a condition 3?

In the context of a condition 3 scenario, which typically refers to an extreme level of contamination, the appropriate remediation approach is to remove, discard, and replace the affected materials, such as flex duct. This is necessary because condition 3 indicates that there is a significant presence of microbial growth or contamination, which poses health risks and is unlikely to be safely cleaned or disinfected.

Cleaning and disinfecting, sealing, or encapsulating the ductwork may not be effective solutions due to the pervasive nature of the contamination in condition 3. Removing and replacing ensures that any residual contaminants that could lead to future health issues are completely eliminated, thus providing a safe and healthy environment. This action is consistent with the best practices outlined in the IICRC standards for microbial remediation, particularly when dealing with serious contamination cases.